Buku Teks
Soothill, W.E. (William Edward), author
Motilal Banarsidass Publishers Private Limites, 1937
Buku Referensi
Perry, Edward Delavan
Columbia University Press, 1959
Buku Teks
Beg, Muhammad Abdul Jabbar
Clampion Printers, 1981
Buku Teks
Lanman, Charles Rockwell, 1850-1941, author
Harvard University Press, 1947
Buku Teks